Slide Preview for P2 Radiation and Life

Powerpoint Description:

This file covers the "Radiation and life" unit (P2) from the 2011 OCR 21st Century syllabus and includes: the basics of radiation, light as photons, the electromagnetic spectrum, high and low energy photons, intensity and what affects it, ionisation, mobile phones and their dangers, uses of microwaves, how microwaves warm up food, radioactivity, the dangers of UV, ozone, the ozone layer, suncream, absorbing x rays, global warming, principal frequencies, the Greenhouse Effect, future temperature predictions due to global warming, the possible effects of global warming, the carbon cycle, balancing carbon dioxide levels, using radio waves and microwaves in communication, analogue and digital signals, transmitting information using light and EM waves as carriers, storing digital signals, the "byte" and its definition.